Extreme Programming Installed

0, 1, and Many

We'll build tests for the 0, 1, and many cases:

public void test0() {
  SearchPanel sp = new SearchPanel();
  sp.setSearcher (new TestSearcher());
  sp.queryField.setText("0");
  sp.findButton.doClick();
  assert("Empty result", sp.resultTable.getRowCount() == 0);

}

At last, we're using the GUI: setting text fields, clicking buttons, and so on.

We run the test, and it passes! This means we already have a working solution if our searcher always returns zero items.

We move on:

 public void test1() { SearchPanel sp = new SearchPanel(); sp.setSearcher (new TestSearcher()); sp.queryField.setText("1"); sp.findButton.doClick(); assert("1-row result", sp.resultTable.getRowCount() == 1); assertEquals( "a0", sp.resultTable.getValueAt(0,0).toString()); ...